Yes.  You can modify one of the sample input files included with the download of CCUweb to include the specific calendar entries. You can then create a test calendar project, include the input file, and run a project build to see if it works.  For more information, refer to pages 20 and 21 in the "CCUweb Setup and User Guide" available at http://www.omni-ts.com/documentation/messaging/ccuweb_setup_ and_user_guide.pdf.